Discover Hexagonal Architecture to create web applications with isolated, testable layers. Gain insights into designing clean, maintainable modules and advocating for suitable techniques for your application.

Get Your Hands Dirty on Clean Architecture by Tom Hombergs.png

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This course will teach you all about creating a web application in the Hexagonal Architecture style. Hexagonal Architecture promotes the separation of concerns by encapsulating logic in different layers of the application. This enables a higher level of isolation, testability, and control over your business specific code. 

You will learn how to design software modules and complete applications in a clean and maintainable manner, while also learning how to advocate for a certain technique given your application and constraints.

By the end of this course, you will have a greater understanding of how to implement software architecture, a key skill for any senior developer.

Hexagonal Software Architecture for Web Applications

Because the visibility modifiers don't understand the concept of sub-packages

Because we can't trust the developers to use the right visibility modifiers

Because we have to make all classes public, anyway

Why can't we rely on Java's visibility modifiers alone to enforce architecture boundaries?

<p>Why can’t we rely on Java’s visibility modifiers alone to enforce architecture boundaries?</p>


They can check if the dependencies within our architecture point into the right direction

They fail if a developer has introduced an unwanted dependency

Which of the following is true for post-compile checks?

<p>Which of the following is true for post-compile checks?</p>


Take a quiz to test your understanding of enforcing architecture boundaries.

Before We Begin

What's Wrong with Layers?

Inverting Dependencies

Organizing Code

Implementing a Use Case

Implementing a Web Adapter

Implementing a Persistence Adapter

Testing Architecture Elements

Mapping Between Boundaries

Assembling the Application

Enforcing Architecture Boundaries

Taking Shortcuts Consciously

Assessment

Conclusion

Appendix

Quiz: Enforcing Architecture Boundaries